Rate Limiting of RPF Failure Traffic

When you enable rate limiting of packets that fail the RPF check (non-RPF packets), most non-RPF packets are dropped in hardware. According to the multicast protocol specification, the router needs to receive the non-RPF packets for the PIM assert mechanism to function properly, so all non-RPF packe...

Open System Authentication

Open system authentication is the default mode that 802.11 uses to authenticate radio cards to an access point. In this mode, a radio card sends an authentication frame to the access point, and the access point returns an authentication response. This form of authentication does not offer any real s...

Requirements and Constraints

Before delving into the typical topologies, it is wise to understand the overall network design process. As with any systems design effort, network design is an exercise in meeting new and old requirements while working within certain constraints. These constraints include money, labor, technology, ...

Changing the Number of VTYs

If you want to increase the number of VTY ports available on the router for remote access, create a reference to the additional lines in the configuration as follows: Router1#configure terminal Enter configuration commands, one per line.  End with CNTL/Z. Router1(config)#line vty 0 9 Rou...

Distribution Layer

The distribution layer provides interconnection between the campus network

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